| Patents for C23C 22 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals (14,001) |
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| 09/25/1991 | CN1014083B Chemical oxidization method for high silicon-aluminium alloy without hydrofluoric acid and pretreatment |
| 09/24/1991 | US5051141 Composition and method for surface refinement of titanium nickel |
| 09/24/1991 | US5051138 Quenching and solidification of melts of steel sheets, cold rolling and annealing |
| 09/20/1991 | CA2038488A1 Process for optimizing corrosion protection of coated substrates |
| 09/19/1991 | WO1991014014A2 Process and composition for treating aluminium |
| 09/19/1991 | WO1991011542A3 Surface treatment method and composition for zinc coated steel sheet |
| 09/18/1991 | EP0447008A1 Use of blackening bath sludge |
| 09/17/1991 | US5049245 Method for producing resin-coated rust-proof steel sheets with properties suitable for electrodeposition coating |
| 09/10/1991 | US5047095 Process for simultaneous smoothing, cleaning, and surface protection of metal objects |
| 09/09/1991 | CA2025218A1 Composition and method for non-chromate coating of aluminum |
| 09/03/1991 | US5045350 Applying tension to light gage grain-oriented silicon electrical steel of less than 7-mil by stress coating to reduce core losses. |
| 09/03/1991 | US5045130 Using chelate compound |
| 08/22/1991 | WO1991013186A1 Conversion treatment method and composition for aluminum and aluminum alloys |
| 08/22/1991 | CA2072592A1 Conversion treatment method and composition for aluminum and aluminum alloys |
| 08/14/1991 | EP0441216A1 Material for roofing and facing |
| 08/14/1991 | EP0441061A1 Organic coatings with ion reactive pigments especially for active metals |
| 08/13/1991 | US5039563 Surface treating agent before coating |
| 08/13/1991 | US5039363 Process for phosphating metal surfaces |
| 08/13/1991 | US5039362 Titanium free composition and process for activating metal surfaces prior to zinc phosphating |
| 08/13/1991 | US5039361 Precipitation removal of iron phosphate sludge |
| 08/13/1991 | US5039360 Spraying mixture of acrylic polymer, soluble chromium compound, phosphoric acid and reducing agent; corrosion resistance |
| 08/08/1991 | WO1991011542A2 Surface treatment method and composition for zinc coated steel sheet |
| 08/07/1991 | CN1053638A Treating composition of metallic surface having excellent lubricity |
| 07/31/1991 | EP0439377A1 Method of applying a zinc-nickel-manganese phosphate coating. |
| 07/31/1991 | EP0438601A1 Insulation coating composition for electric sheet and method of insulation coating of electric sheet |
| 07/30/1991 | US5035940 Weather-Resistance Automotive Trim |
| 07/30/1991 | CA1286957C Acidic chromium containing coating solution for zinc or cadmium surfaces |
| 07/27/1991 | CA2035048A1 Phosphate coating composition and method of applying a zinc-nickel-manganese phosphate coating |
| 07/25/1991 | WO1991010756A1 Surface-treatment method for tin-plated drawn and ironed cans |
| 07/25/1991 | CA2072258A1 Surface-treatment method for tin-plated drawn and ironed cans |
| 07/23/1991 | CA1286574C Solution and process for coating metals |
| 07/17/1991 | CN1053095A Rust-removing paste and antirusting liq. for iron and steel |
| 07/16/1991 | US5032236 Electrolysis, oxidation, protective coating |
| 07/10/1991 | EP0436408A1 Process and bath for applying protective chrome hexavalent coatings on metallic substrates and trade form of the bath components |
| 07/03/1991 | EP0434757A1 Improved fluoropolymer-metal laminates |
| 07/03/1991 | CN1052705A Rust cleaning antirusting agent |
| 07/02/1991 | CA1285459C Chromate surface treated steel sheet |
| 06/27/1991 | WO1991009152A1 Galvanized steel plate having excellent capability of press working, chemical conversion and the like, and production of said plate |
| 06/27/1991 | DE4005112A1 Surface treatment of parts - by zinc plating, olive chromating and black colouring |
| 06/26/1991 | EP0434358A2 Method for phosphating metal surface with zinc phosphate |
| 06/26/1991 | EP0433786A1 Apparatus for processing grain-oriented electrical steel strip |
| 06/26/1991 | EP0433321A1 Polyurethane-containing spinning preparations |
| 06/26/1991 | EP0277243B1 Process for forming insulating film on electrical sheet |
| 06/26/1991 | CN1012969B Process for antiseptic processing of iron-based material |
| 06/25/1991 | US5026612 Surface treatment aluminum sheet; applying adhesive; press lubricant |
| 06/25/1991 | US5026440 Treating surface with aluminum-zirconium complexes |
| 06/25/1991 | US5026423 Compositions and process for metal treatment |
| 06/19/1991 | EP0433118A1 Chemical metal substrate conversion process, bath used therefor and concentrate for preparing the bath |
| 06/19/1991 | EP0432732A2 Thermal flattening semi-processed electrical steel |
| 06/19/1991 | CN1052317A Watery coating with rust |
| 06/18/1991 | US5024707 Process of decreasing the incrustation in phosphating plants |
| 06/18/1991 | CA1284930C Process for preparing a metal for cold forming |
| 06/11/1991 | US5023146 Black surface-treated steel sheet |
| 06/11/1991 | US5022938 Method for preparing corrosion-resistant zinc-cobalt surfaces |
| 06/11/1991 | CA1284763C Composition and method for metal surface refinement |
| 06/11/1991 | CA1284762C Process and composition for conversion coating metal surfaces |
| 06/05/1991 | EP0430726A1 Method for treating lead or lead alloy surfaces and product obtained |
| 06/05/1991 | EP0204846B1 Method of manufacturing colored stainless steel materials and apparatus for continuously manufacturing same |
| 05/28/1991 | CA1284451C Solution and process for cold forming titanium |
| 05/28/1991 | CA1284443C Jacketing steel objects |
| 05/21/1991 | US5017439 Aluminum, magnesium |
| 05/16/1991 | WO1991006375A1 Application of an organic coating to small metallic articles |
| 05/15/1991 | CN1012625B Method for prepn. of metal surface cleaning liquid |
| 05/14/1991 | US5015507 Method of converting rusted surface to a durable one |
| 05/14/1991 | US5015298 Composition and method for removing iron containing deposits from equipment constructed of dissimilar metals |
| 05/08/1991 | CN1051214A 蒸汽熨斗 Steam iron |
| 05/07/1991 | US5013381 Lanthanide series or yttrium salts |
| 05/07/1991 | CA2029381A1 Process adapted to provide on a metallic substrate a protective coating based on haxavalent chromium, bath used in the said process and commercial form of the components of the bath |
| 05/02/1991 | EP0425271A2 Process for rinsing phosphate conversion coatings with compositions containing an S-triazine compound |
| 05/02/1991 | EP0425043A1 Steam iron |
| 04/30/1991 | US5011738 Procedure for the application of a PTFE-based self-lubricating coating on a bearing element, and the bearings thus obtained |
| 04/30/1991 | US5011551 Protective coating for steel surfaces and method of application |
| 04/25/1991 | DE4036113A1 Chemical treatment bath for part made of aluminium steel - comprising upper bath fed via pump from lower bath with upper bath having rapid draining holes to empty bath when pump is switched off |
| 04/24/1991 | EP0423740A2 Organic composite coated steel strip having improved corrosion resistance and weldability |
| 04/24/1991 | EP0423624A1 Color-coated article and method for producing the same |
| 04/23/1991 | US5009962 Using mixture of carboxymethyl cellulose and methylolacrylamide |
| 04/17/1991 | EP0422629A1 Process for treating aluminium alloy powders |
| 04/16/1991 | US5008097 Aqueous solution containing a new ferric ferrous salt Fe2 Cl5 and method of producing same |
| 04/16/1991 | CA1283029C Process for producing a calcium phosphate compound coated composite material |
| 04/16/1991 | CA1283028C Titanium composite materials coated with calcium phosphate compound and process for production thereof |
| 04/10/1991 | CN1050572A Improved surface blackening treatment for zinciferous surfaces |
| 04/09/1991 | US5006419 Structural component made of a titanium alloy and covered by a protective coating and method for producing the coating |
| 04/09/1991 | US5006200 Printed circuit boards, formation of cupric oxide layer, reduction to cuprous oxide, heating, pressing, modifying morphology |
| 04/04/1991 | WO1991004354A1 Articles with zinciferous surfaces with improved unpainted corrosion resistance, and processes for making and using the same |
| 04/04/1991 | WO1991002829A3 Process for producing manganese-containing zinc phosphate coatings on galvanized steel |
| 04/03/1991 | EP0420788A1 Process for treating a brass-plated steel wire |
| 04/02/1991 | US5004646 Phosphate ester of hydroxy (meth)acrylate |
| 03/28/1991 | WO1991005078A1 Composition and process for chromating galvanized steel and like materials |
| 03/27/1991 | EP0419032A2 Corrosion resistant coated aluminium articles and process for making same |
| 03/27/1991 | EP0418634A1 Improved protective coating processes for zinc coated steel |
| 03/21/1991 | WO1991003582A1 Method of conditioning surfaces before phosphating |
| 03/20/1991 | CN1050052A Rust inhibitor of steel and rust inhibition aid |
| 03/20/1991 | CN1012081B Repair liquid for defect of blue annealed layer |
| 03/19/1991 | US5000799 Zinc-nickel phosphate conversion coating composition and process |
| 03/13/1991 | EP0416420A2 Magnesium oxide coating for electrical steels and the method of coating |
| 03/13/1991 | CN1049873A Process for surface treatment of fastening elements |
| 03/13/1991 | CN1049871A Transfer-agent for rust and its usage |
| 03/07/1991 | WO1991002828A1 Insulation coating composition for electric sheet and method of insulation coating of electric sheet |
| 03/06/1991 | EP0414852A1 Method for improving the adhesion of a plastic encapsulant to copper containing leadframes |
| 03/06/1991 | CN1011915B Corrosion reagent to display the structural banding of chrominium bearing steel |